minecraft java edition required java editions according to the manifest files

a_version.md

Range Start	Range End	Java Version
1.18	1.19.4	17
1.17	1.17.1	16
1.0	1.16.5	8

script.ts

// deno script.ts --allow-net --allow-write

const response = await fetch("https://piston-meta.mojang.com/mc/game/version_manifest_v2.json");
const json = await response.json();

const versions = new Map<string, string>();

for (const version of json.versions) {
    if (!(version.type === "release")) continue;
    const response = await fetch(version.url);
    const manifest = await response.json();

    if (!manifest.javaVersion) {
        console.warn(`Warning: manifest.javaVersion is missing for version ${version.id}`);
        continue;
    }

    console.log(version.id, manifest.javaVersion.majorVersion);
    versions.set(version.id, manifest.javaVersion.majorVersion);
}

// write versions to file
await Deno.writeTextFile("versions.json", JSON.stringify(Object.fromEntries(versions), null, 4));

interface MinecraftVersion {
    major: number;
    minor: number;
    patch: number;
}

function parseMinecraftVersion(version: string): MinecraftVersion {
    const [major, minor, patch] = version.split(".").map(Number);
    return {
        major: major || 0,
        minor: minor || 0,
        patch: patch || 0,
    };
}

function compareMinecraftVersions(a: MinecraftVersion, b: MinecraftVersion): number {
    if (a.major !== b.major) return b.major - a.major;
    if (a.minor !== b.minor) return b.minor - a.minor;
    return b.patch - a.patch;
}

interface Range {
    start: string;
    end: string;
    javaVersion: string;
}

const sortedVersions = Array.from(versions.entries())
    .map(([id, javaVersion]) => ({
        id,
        javaVersion,
        minecraftVersion: parseMinecraftVersion(id),
    }))
    .sort((a, b) => compareMinecraftVersions(a.minecraftVersion, b.minecraftVersion));

const ranges: Range[] = [];
let currentRange: Range | null = null;

for (const { id, javaVersion } of sortedVersions) {
    if (!currentRange) {
        currentRange = { start: id, end: id, javaVersion };
    } else if (versions.get(currentRange.end) === javaVersion) {
        currentRange.start = id;
    } else {
        ranges.push(currentRange);
        currentRange = { start: id, end: id, javaVersion };
    }
}

if (currentRange) {
    ranges.push(currentRange);
}

console.log("Ranges:", ranges);

// write ranges to file
await Deno.writeTextFile("ranges.json", JSON.stringify(ranges, null, 4));

// Create a formatted table
const tableHeader = `| Range Start | Range End | Java Version |\n|-------------|-----------|--------------|\n`;
const tableRows = ranges
    .map((range) => `| ${range.start} | ${range.end} | ${range.javaVersion} |`)
    .join("\n");

const formattedTable = tableHeader + tableRows;

// Write the formatted table to "version.txt"
await Deno.writeTextFile("version.txt", formattedTable);

versions.json

{
    "1.19.4": 17,
    "1.19.3": 17,
    "1.19.2": 17,
    "1.19.1": 17,
    "1.19": 17,
    "1.18.2": 17,
    "1.18.1": 17,
    "1.18": 17,
    "1.17.1": 16,
    "1.17": 16,
    "1.16.5": 8,
    "1.16.4": 8,
    "1.16.3": 8,
    "1.16.2": 8,
    "1.16.1": 8,
    "1.16": 8,
    "1.15.2": 8,
    "1.15.1": 8,
    "1.15": 8,
    "1.14.4": 8,
    "1.14.3": 8,
    "1.14.2": 8,
    "1.14.1": 8,
    "1.14": 8,
    "1.13.2": 8,
    "1.13.1": 8,
    "1.13": 8,
    "1.12.2": 8,
    "1.12.1": 8,
    "1.12": 8,
    "1.11.2": 8,
    "1.11.1": 8,
    "1.11": 8,
    "1.10.2": 8,
    "1.10.1": 8,
    "1.10": 8,
    "1.9.4": 8,
    "1.9.3": 8,
    "1.9.2": 8,
    "1.9.1": 8,
    "1.9": 8,
    "1.8.9": 8,
    "1.8.8": 8,
    "1.8.7": 8,
    "1.8.6": 8,
    "1.8.5": 8,
    "1.8.4": 8,
    "1.8.3": 8,
    "1.8.2": 8,
    "1.8.1": 8,
    "1.8": 8,
    "1.7.10": 8,
    "1.7.9": 8,
    "1.7.8": 8,
    "1.7.7": 8,
    "1.7.6": 8,
    "1.7.5": 8,
    "1.7.4": 8,
    "1.7.3": 8,
    "1.7.2": 8,
    "1.5.2": 8,
    "1.5.1": 8,
    "1.4.7": 8,
    "1.4.6": 8,
    "1.4.5": 8,
    "1.4.4": 8,
    "1.4.2": 8,
    "1.3.2": 8,
    "1.3.1": 8,
    "1.2.5": 8,
    "1.2.4": 8,
    "1.2.3": 8,
    "1.2.2": 8,
    "1.2.1": 8,
    "1.1": 8,
    "1.0": 8
}